2 /* Copyright (c) 2007-2014. The SimGrid Team.
3 * All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_rma, smpi, "Logging specific to SMPI (RMA operations)");
14 xbt_bar_t creation_bar = NULL;
16 typedef struct s_smpi_mpi_win{
25 MPI_Win* connected_wins;
29 MPI_Win smpi_mpi_win_create( void *base, MPI_Aint size, int disp_unit, MPI_Info info, MPI_Comm comm){
33 int comm_size = smpi_comm_size(comm);
34 int rank=smpi_comm_rank(comm);
35 XBT_DEBUG("Creating window");
37 win = xbt_new(s_smpi_mpi_win_t, 1);
40 win->disp_unit = disp_unit;
44 win->requests = xbt_dynar_new(sizeof(MPI_Request), NULL);
45 win->connected_wins = xbt_malloc0(comm_size*sizeof(MPI_Win));
46 win->connected_wins[rank] = win;
49 win->bar=xbt_barrier_init(comm_size);
52 mpi_coll_allgather_fun(&(win->connected_wins[rank]),
60 mpi_coll_bcast_fun( &(win->bar),
66 mpi_coll_barrier_fun(comm);
71 int smpi_mpi_win_free( MPI_Win* win){
73 //As per the standard, perform a barrier to ensure every async comm is finished
74 xbt_barrier_wait((*win)->bar);
75 xbt_dynar_free(&(*win)->requests);
76 xbt_free((*win)->connected_wins);
83 int smpi_mpi_win_fence( int assert, MPI_Win win){
85 XBT_DEBUG("Entering fence");
87 if(assert != MPI_MODE_NOPRECEDE){
88 xbt_barrier_wait(win->bar);
90 xbt_dynar_t reqs = win->requests;
91 int size = xbt_dynar_length(reqs);
94 // start all requests that have been prepared by another process
95 xbt_dynar_foreach(reqs, cpt, req){
96 if (req->flags & PREPARED) smpi_mpi_start(req);
99 MPI_Request* treqs = xbt_dynar_to_array(reqs);
100 smpi_mpi_waitall(size,treqs,MPI_STATUSES_IGNORE);
102 win->requests=xbt_dynar_new(sizeof(MPI_Request), NULL);
105 win->assert = assert;
107 xbt_barrier_wait(win->bar);
108 XBT_DEBUG("Leaving fence ");
113 int smpi_mpi_put( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
114 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Win win)
116 //get receiver pointer
117 MPI_Win recv_win = win->connected_wins[target_rank];
119 void* recv_addr = (void*) ( ((char*)recv_win->base) + target_disp * recv_win->disp_unit);
120 smpi_datatype_use(origin_datatype);
121 smpi_datatype_use(target_datatype);
122 XBT_DEBUG("Entering MPI_Put to %d", target_rank);
124 if(target_rank != smpi_comm_rank(win->comm)){
125 //prepare send_request
126 MPI_Request sreq = smpi_rma_send_init(origin_addr, origin_count, origin_datatype,
127 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+1, win->comm, MPI_OP_NULL);
129 //prepare receiver request
130 MPI_Request rreq = smpi_rma_recv_init(recv_addr, target_count, target_datatype,
131 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+1, recv_win->comm, MPI_OP_NULL);
133 //push request to receiver's win
134 xbt_dynar_push_as(recv_win->requests, MPI_Request, rreq);
137 smpi_mpi_start(sreq);
139 //push request to sender's win
140 xbt_dynar_push_as(win->requests, MPI_Request, sreq);
142 smpi_datatype_copy(origin_addr, origin_count, origin_datatype,
143 recv_addr, target_count, target_datatype);
149 int smpi_mpi_get( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
150 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Win win)
153 MPI_Win send_win = win->connected_wins[target_rank];
155 void* send_addr = (void*)( ((char*)send_win->base) + target_disp * send_win->disp_unit);
156 smpi_datatype_use(origin_datatype);
157 smpi_datatype_use(target_datatype);
158 XBT_DEBUG("Entering MPI_Get from %d", target_rank);
160 if(target_rank != smpi_comm_rank(win->comm)){
161 //prepare send_request
162 MPI_Request sreq = smpi_rma_send_init(send_addr, target_count, target_datatype,
163 smpi_group_index(smpi_comm_group(win->comm),target_rank), smpi_process_index(), RMA_TAG+2, send_win->comm, MPI_OP_NULL);
165 //prepare receiver request
166 MPI_Request rreq = smpi_rma_recv_init(origin_addr, origin_count, origin_datatype,
167 smpi_group_index(smpi_comm_group(win->comm),target_rank), smpi_process_index(), RMA_TAG+2, win->comm, MPI_OP_NULL);
169 //start the send, with another process than us as sender.
170 smpi_mpi_start(sreq);
172 //push request to receiver's win
173 xbt_dynar_push_as(send_win->requests, MPI_Request, sreq);
176 smpi_mpi_start(rreq);
178 //push request to sender's win
179 xbt_dynar_push_as(win->requests, MPI_Request, rreq);
181 smpi_datatype_copy(send_addr, target_count, target_datatype,
182 origin_addr, origin_count, origin_datatype);
189 int smpi_mpi_accumulate( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank,
190 MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win)
192 //FIXME: local version
193 //get receiver pointer
194 MPI_Win recv_win = win->connected_wins[target_rank];
196 void* recv_addr = (void*)( ((char*)recv_win->base) + target_disp * recv_win->disp_unit);
197 XBT_DEBUG("Entering MPI_Accumulate to %d", target_rank);
199 smpi_datatype_use(origin_datatype);
200 smpi_datatype_use(target_datatype);
203 //prepare send_request
204 MPI_Request sreq = smpi_rma_send_init(origin_addr, origin_count, origin_datatype,
205 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+3, win->comm, op);
207 //prepare receiver request
208 MPI_Request rreq = smpi_rma_recv_init(recv_addr, target_count, target_datatype,
209 smpi_process_index(), smpi_group_index(smpi_comm_group(win->comm),target_rank), RMA_TAG+3, recv_win->comm, op);
210 //push request to receiver's win
211 xbt_dynar_push_as(recv_win->requests, MPI_Request, rreq);
213 smpi_mpi_start(sreq);
215 //push request to sender's win
216 xbt_dynar_push_as(win->requests, MPI_Request, sreq);